tag: CDC

Streamlining DO-254 Compliance: The Power Of Automated Clock-Domain Crossing Verification
By Kurt Takara - 11 Dec, 2025 - Comments: 0

In the realm of safety-critical electronic hardware, particularly those governed by DO-254 compliance directives, ensuring design integrity is paramount. One of the most insidious challenges designers face is clock-domain crossing (CDC) violations. When data moves between asynchronous clock domains, it can lead to metastability issues, causing unpredictable behavior, data loss or corruption, an... » read more

Accellera Standard Supports Hierarchical Data Model For CDC And RDC Analysis
By Farhad Ahmed - 13 Nov, 2025 - Comments: 0

The hierarchical flow for clock domain crossing (CDC) and reset domain crossing (RDC) is a methodology used in the verification of large, complex digital integrated circuits. It's a divide-and-conquer approach that significantly improves the efficiency and turnaround time for ensuring design reliability against metastability and other issues at asynchronous boundaries. Questa CDC and RDC sol... » read more

Standardization Of HDMs For Hierarchical CDC And RDC Analysis
By Siemens EDA - 12 Nov, 2025 - Comments: 0

Currently hierarchical data models (HDM) must be generated with the same EDA tool that customers will use to consume the HDM for CDC and RDC analysis at the SoC level. To resolve this problem a CDC Working Group was created within the Accellera organization. The goal of this Working Group is to create a standard format for HDMs so the models can be consumed by any EDA tool irrespective of the s... » read more

Top Five Trends In RTL Signoff
By Suresh Babu Barla - 30 Oct, 2025 - Comments: 0

By Suresh Babu Barla and Rimpy Chugh The “shift left” of the development cycle is critical for the huge, complex chips used in such applications as AI and high-performance computing (HPC). Identifying design issues at the netlist stage occurs far too late in the design development process. At this point, addressing such problems demands significant effort, primarily because most design-r... » read more

Accelerating Reset Domain Crossing Verification With Data Analytics Techniques
By Reetika - 26 Sep, 2024 - Comments: 0

By Reetika and Sulabh Kumar Khare As the complexity of integrated circuit (IC) designs continues to rise, the task of verifying these designs has become increasingly challenging. The pace of this growth is staggering, with design complexity doubling roughly every 20 months. This exponential increase places immense pressure on verification processes, which must keep up to ensure that these so... » read more

Is There Any Hope For Asynchronous Design?
By Brian Bailey - 25 Apr, 2024 - Comments: 6

In an era when power has become a fundamental design constraint, questions persist about whether asynchronous logic has a role to play. It is a design style said to have significant benefits and yet has never resulted in more than a few experiments. Synchronous design utilizes a clock, where the clock frequency is set by the longest and slowest path in the design. That includes potential var... » read more

Ensure Zero Functional CDC Signoff Defects With VC SpyGlass Integrated Solution
By Synopsys - 06 Mar, 2024 - Comments: 0

This whitepaper will explain how designers can ensure zero defects seamlessly using Synopsys VC SpyGlass as a single cockpit for not just structural CDC analysis but also for complete functional analysis. We will also cover how designers can utilize a single dashboard for tracking the functional CDC signoff progress over the course of the project. Click here to read more. » read more

Accellera Preps New Standard For Clock-Domain Crossing
By Brian Bailey - 29 Feb, 2024 - Comments: 0

Part of the hierarchical development flow is about to get a lot simpler, thanks to a new standard being created by Accellera. What is less clear is how long will it take before users see any benefit. At the register transfer level (RTL), when a data signal passes between two flip flops, it initially is assumed that clocks are perfect. After clock-tree synthesis and place-and-route are perfor... » read more

Achieve 10X Faster CDC Debug Leveraging Machine Learning
By Synopsys - 25 Jan, 2023 - Comments: 0

Over the years, system-on-chip (SoC) design sizes have crossed the billion-gate mark. Higher complexity has been introduced within semiconductor designs to deliver desired functionality. The number of asynchronous clock and reset domains is growing heavily within these complex SoCs, leading to millions of clock domain crossing (CDC) violations at the SoC level. Each of these violations ... » read more

Formal Verification Ensures The Perseverance Rover Lands Safely On Mars
By Joseph Hupcey III - 28 Apr, 2022 - Comments: 0

By Joe Hupcey III and Kevin Campbell Safely landing a spacecraft anywhere on Mars is a complex, high-risk challenge. Even worse, the most scientifically interesting areas of the planet are guarded by boulders, ditches, and tall cliffs — land formations that aren’t very welcoming to vehicles. Such was the case with the Mars Perseverance Rover's Landing Site: Jezero Crater. It’s not an e... » read more

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